(01-29-2022, 09:12 PM)2eleven Wrote:(01-29-2022, 05:50 PM)JimmyH Wrote: Galling on Ti, or aluminum might be an issue with machining, but not simply attaching the handle to the head.
Unfortunately in my experience, Ti thread galling is not limited to machining, although dull or damaged cutting tools could leave mating surfaces that are more prone to later galling. I've had Ti flashlight threads gall on multiple flashlights over time with repeated twisting and untwisting (to turn on/off or to focus the beam). These examples are not due to overtightening. I no longer buy Ti flashlights that require twisting for basic function. Also, for this reason, I believe Ti to be better suited to applications where you tighten a screw and leave it (Jimmy's bicycle) rather than applications where you are constantly turning the threads. I usually disassemble my 3-piece razors after each use. If I had a Ti Wolfman, I might leave it assembled for the life of each blade to minimize the turns.
Now having said that, I don't think anyone needs to panic if they love Ti razors. Flashlight threads generally mate very closely to produce a smooth, damped twisting action. Most 3-piece razors have much looser fitting threads and, as such, will be less susceptible to galling (unless you regularly overtighten perhaps). Also, galled threads would not leave your razor unusable. The threads would not seize under normal use in this application, and you can partially repair them by chasing the galled threads with a good tap and die.
The nice thing about that Ti lube I recommended is that it will prevent seizing of Ti, or dissimilar metals. Good stuff. Probably would eliminate the risk of galling as well. The only drawback is that it colors the metal, sort of a bronze look. Keep it on the threads, a little goes a long way.